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Sr. ISSO Security Clearance

Job in Reston, Fairfax County, Virginia, 20190, USA
Listing for: Procession Systems
Full Time position
Listed on 2026-01-15
Job specializations:
  • IT/Tech
    Cybersecurity, IT Consultant, Information Security, Systems Engineer
Job Description & How to Apply Below
Position: 3363 - Sr. ISSO with Security Clearance
GENERAL DUTIES:
* Responsibilities are full time on customer's onsite and will cover classified programs and Special Access Programs (SAP). No Telework.

* Provide subject matter expertise and consulting on security related matters for enterprise information system and network architectures, access problems, and implementation of security policies and procedures.

* Assist in overseeing and managing day-to-day operation of SAP Information Systems.

* Optimize system operation and resource utilization and performs system capacity planning/analysis while maintaining the security posture.

* Assist team in Authorization and Accreditation (A&A) process using RMF across the design lifecycle for classified systems obtaining and maintaining Interim Authority to Operate (ATO), ATO and Authority to Connect (ATC).

* Create and process RMF authorization SAP packages from submission to approval/disapproval

* Develop and maintain IT security documents, including system security plans, risk assessments, Plan of Action and Milestones (POA&M), contingency plans, incident response plans, IT security policies and procedures.

* Provide recommendations regarding remediation and mitigation of identified vulnerabilities by developing plan of action and milestones (POA&Ms).

* Advise developers on integrating security requirements

* Demonstrate a strong understanding of Networks, Cloud, and IT system security authorization procedures.

REQUIRED QUALIFICATIONS:

* Demonstrates strong experience with IC/DoD customer's Assessment and Authorization (A&A) process (e.g., RMF, NIST
800-53, ICD
503).

* Experience in developing and implementing DoD/DIA approved information security controls, procedures and documentation for the operation of standalone classified systems.

* A Bachelor's Degree from an accredited institute in an area applicable to this position and eight (8) years of relevant experience

* An additional four (4) years of relevant experience may be substituted for the bachelor's degree

* Must presently be 8570 compliant (IAT Level 2 preferred); must be 8570 compliant (IAT Level
2)

* Experience with one or more commercial government cloud service provider's system accreditation processes

* Experience with the Xacta

* Experience as a Cybersecurity Control Assessor for SAP

* Experience with Ongoing Authorizations and Assessments

* Experience with C2S Cloud, or Dev Ops Sec ) CLEARANCE:
* TS/SCI with CI Polygraph minimum
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